diff --git a/Cargo.toml b/Cargo.toml
index a4499b7..a975d39 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "pmg-log-tracker"
 version = "2.2.0"
 authors = ["Mira Limbeck <m.limbeck@proxmox.com>", "Dietmar Maurer <dietmar@proxmox.com>"]
-edition = "2018"
+edition = "2021"
 license = "AGPL-3"
 description = "Proxmox Mailgateway Log Tracker. Tool to scan mail logs."
 homepage = "https://www.proxmox.com"